Coupling.



E. 0. WARNER.

COUPLING.

APPLICATION FILED APR. 7. 1903.

N0 MODEL.

E15 2 4 J 0 gm (3. i 2

r-" 1 A if INVENTOR.

ATT RNEY.

INE Nbnms PETERS c0. Puu'fqmwo" wnmmmon, a. c.

UNITED STATES I Patented July 28, 1903.

PATENT OFFICE.

EDWARD O. WARNER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO LATROBE STEEL & COUPLER COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A CORPORATIQN OF NEW JERSEY.

COUPLING.

SPECIFICATION forming part of Letters Patent No. 734,782, dated July 28, 1903.

Application filed April 7,1903. Serial No. 151,434. (No model.)

. To all whom it may concern:

Be it known that I, EDWARD O. WARNER, a citizen of the United States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Couplers, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to railroad-couplers, and has for its object particularly the improvement in the locking-pin and its immediate connections and coacting parts,with aparticular view, in the first place, of facilitating the movement of the locking-pin from a set position to one in which it is enabled to fall to locking position, and, in the second place,.

to provide an improved construction and combination oflocking and lifting pin sections which is well adapted to prevent the creeping of the pin and is also well adapted to provide for the lifting of the pin in case ofthe breaking loose of the draw-head.

The nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated,

and in which- Figure l is a plan view of my improved coupling-head with the jaw connected therewith, but with the locking and lifting pin sections removed. Fig. 2 is a side view of the coupling-head and draw-bar, shown partly in section on the line 2 2 of Fig. l and with the pin illustrated in looking position. Fig. 3 is a similar side view with the locking-pin shown in i set position and the lifting-pin section turned backward, showing its capacity for such turning motion. Fig. 4 isa rear view of the two sections making-up the pin, the said parts being shown disassociated; and Fig. 5 is a front yiew of-the pin-sections, shown also in disassociated positions.

I A indicates the coupling-head formed, as

is usual,integral with the draw-bar portion A. A indicates the top, and A the bottom or floor, of the chamber formed in the head and wherein the tail of the knuckle moves.

. A indicates the locking-pin hole, which where it passes through the floor of the cham- .as is shown, and having a tail,

ber formed in the head is, in accordance with my present invention, formed with a lateral wall a inclined forwardly and inwardly, as

I shown, instead of forming a continuation of an inclined notch, as indicated at a 13 indicates the knuckle pivoted to the head, (indicated at B.) I

O is a removable abutment or shoulder, shown here as a bolt-section, which extends through the upper portion of the pin-hole A*, as shown, and can be removed to permit the insertion or withdrawal of the locking-pin section.

D is the locking pin section, formed with a prolongation whichextends through the pin-;

hole formedin the floor of the chamber and which prolongation has, as shown, an extension D,which always remains Within the pinhole formed in the bottom and immediately in front of which lies the inclined shoulder, (indicated at d.) The upper portion of the locking-pin D is by preference formed with a rearwardly and downwardly inclined top (indicated at D and with arearwardly and downwardly inclined groove (indicated at D and which communicates with the top of the pin through a slot D, the walls d on each side of this slot lying over the lateral portions of the grooves or recesses D The pin is also formed with a shoulder D, extending rearward of the grooved and slotted portions, as shown. The groove D extends upward from the rear face of the upper portionof the pin and terminates in a shoulder, (indicated at D I I E indicates the lifting-section of the pin and has by preference its lower end E formed on an inclination which corresponds to the inclination D of the upper end of the lockingpin, and from the lower end of the pin E extends the tongue E which is adapted to pass freely through the slot D and has extending laterally from it trunnions E4 E, which are enabled to pass freely into the groove or openmg D until they come in contact with its top shoulder D indicates the top of the pin E, by which it is attached to an ordinary lifting-chain (not shown) and which is preferably formed with a shoulder a which, when the pin is in looking position,should rest upon the top wall surrounding the pin-hole in the head. The lifting-pin section is also provided with a rearwardly-extending shoulder E.

In operation the pin when in looking position occupies the position shown in Fig. 2, the lifting-section E being somewhat thrust backward, so that its shoulder E extends below the pin or shoulder O, and it will be obvious that if for any reason force is exerted on the locking-pin section D, tending to lift it, it will press the lifting-pin E backward and force the shoulder E still more firmly beneath the abutment O, in this way effectually locking the lifting-pin section and through it the locking-pin section against all forces tending to raise them except those exerted through the lifting-pin section. \Vhen it is desired to unlock the knuckle, the locking-pin is drawn up by the lifting-pin section, which in the act of drawing up is thrown forward to clear the shoulder O, and when the pin D has been raised to a position where it clears the tongue B of the knuckle it is canted or tilted forward, so that its inclined shoulder cl is thrown over the front wall a of the pin-hole formed in the floor of the chamber, engaging the sloping notch a as is shown, for instance, in Fig. 3. The knuckletail is then enabled to pass forward to the position shown in dotted lines in Fig. 1, its shape being such that as it is moved forward it gradually pushes backward on the tail of the locking-pin until it pushes the shoulder cl over the edge of the wall a whereupon the pin is free to drop until its enlarged portion rests upon the tail of the knuckle and when the knuckle is returned to its engaging position (shown in full lines in Fig. 1) is free to trip to locking position, as shown in Fig. 2. It is to facilitate the backward motion of the locking-pin that I give to the wall a the inclination shown in Fig. 1, this construction greatly diminishing friction and enabling the pin to be moved with much less effort than has heretofore been the case. In normal operation the lifting-pin section E moves practically up and down with a slight shifting forward and back; but in case the draw-bar breaks loose from the car and the couplinghead is drawn forward the lifting-pin section E is free to turn backward on its trunnions warez Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The coupler-head having a pin-hole formed in it for the locking-pin, said pin-hole having, where it passes through the floor of the chamber in the head, a forwardly and inwardly inclined wall a.

2. The couplerhead having a pin hole formed in it for the locking-pin, said pin-hole having, where it passes through the floor of the chamber in the head, forwardly and inwardly inclined walls a, a

3. The coupler-head having a pin-hole formed in it for the locking-pin, said pin-hole having, where it passes through the floor of the chamber in the head, forwardly and inwardly inclined walls a, a and an inclined recess a at the edge of wall a.

4. In combination with a coupler-head having a locking-pin hole, the coupler lockingpin having a rearwardly and downwardly inclined recess D and a groove D leading through the top of the pin into said recess and the lifting-pin having a downwardlyextending tongue adapted to pass through groove D and laterally-extending trunnions E, E adapted to enter the recess D and engage the walls of the groove, whereby the lifting-pin is enabled to turn backward as on a hinge, without disengaging the locking-pin.

5. In combination with a coupler-head having a locking-pin hole, the coupler lockingpin having a rearwardly and downwardlyinclined upper end, formed with an inclined recess D and a groove D leading through the inclined top of the pin into said recess, and the lifting-pin, having a downwardlyeXtending tongue adapted to pass through groove D and laterally-extending trunnions E, E, adapted to enter the recess D and engage the walls of the groove, whereby the lifting-pin is enabled to turn backward as on a hinge, without disengaging the locking-pin.

6. In combination with a coupler-head having a locking-pin hole, the coupler lockingpin, having a rearwardly and downwardly inclined upper end, formed with an inclined recess D and a groove D leading through the inclined top of the pin into said recess, and the lifting-pin having its lower end inclined to conform to the inclination of the locking-pin, a downwardly-extending tongue adapted to pass through groove D and laterally-extending trunnions E E adapted to enter the recess D and engage the walls of the groove, whereby the lifting-pin is enabled to turn backward as on a hinge, without disengaging the locking-pin, said lifting-pin having also a rearwardly-extending shoulder adapted, when the connected pins are in their lowermost positions, to engage under a ledge in'the pin-hole of the coupler.

7. In combination with a coupler-head having a locking-pin hole and a removable shoulder or ledge 0, extending across the rear side of said hole, the coupler locking-pin, having a rearwardly and downwardly inclined upper end formed with an inclined recess D and a groove D leading through the inclined top of the pin into said recess, and the liftingpin, having its lower end inclined to conform to the inclination of the 1ocking-pin,adownwardly-extending tongue adapted to pass through groove D and laterally-extending trunnions E E adaptedto enter the recess D and engage the walls of the groove, wherea by the lifting-pin is enabled to turn backward as on a hinge, without disengaging the locking-pin, said lifting-pin having also a rearwardly-exten ding shoulder adapted, when the connected pins are in their lowermost positions, to engage under the ledge O, in the pinhole of the coupler.

EDNVARD O. WARNER.

Witnesses:

CHAS. F. MYERS. D. STEWART. 

